Filter for liquids under pressure



June 17, 1930. G. JAVITCH 36 5 FILTER FOR LIQUIDS UNDER PRESSURE Filbd April 4, 1929 Invefikor; Gre'gm Javiltzh B Y F l Attorney:

Patented June 17, 1930 amass? GREGORI JAVITCH, or LEVALLOIsrE R-ET, FRANCE y FILTER FORLI'QUIDSVUNDER rn'nsst anf v V Application-filed April 4, 1929, Serial m, 35e, 5e4, anirmrrane a rii 5392s;

iMy present invention has for its object to provide an improved filter for liquids under pressure, that is one which is characterized.

' by the combinationof a bipartite casing and '5 a filtering device comprising a filtering member and a roses placed one againstthe other and arranged between the two halves of the casing, the whole being assembled and held p q ltS outer .rim 12endmg into a slot l3radapted in assembled relation by means of a yoke provided with a" set-screw adapted to pro duce pressureon the casing to secure an efliciently tight joint between the two halves of the casing. 1 i

*My improved'device is furthermore characterized' by a filtration indicating device,

constituted by an opening provided on the J side of the casing and enabling-a thin'stream of liquid to'trickle outwardly as the pressure produced by said set screw isinsulficient for so securing aperfect filtration.

One preferred embodiment of my inven-- lHOIlIlS illustrated 1n the accompanylngdrawo ings,'wherein: a q

' Fig. 1 1s a frontelevatlon and VGItlCELl SBC- tion of a filter constructed according to my T inventioni I I v v r r F1g.j 2 1s a sectlon onl ne A-A of Fig.1; Fig. 3 isa sectional view showing the device for tightening the filter and controlling so the operation thereof. 7

I, I Fig' lis an elevation or said. device. J 'Rei'erring to'the drawings,'A'-is the casing of my improved filter made oftwo halves 1,

2, thehalf 1 being provided at the centre of ts outersurfacewith a screw-threadedtubular extension 3 enabling it to be screwed onto theend of atap distributing liquid under pressure. Said half 1 has videdwith perforations 15 for distributing the liquid entering through 3.

The half2 of the casing A comprises acircular rose 7 supported on a seat 8 provided in the material of said half 2 above a chamber 7 an inn er fiange dwherebyit may be fitted into the second half 2 'and -a'n by a ring 14 carried, by the half 1 and p municatingwith the-chamber 8% j t r Arrangedfbetween the half2 and thefiange l on the hal't l is j Olllf riDg lrO of plastic material. i

8 wherein at filtered liquid is trousers- 1 be- Thje'half 2fo-i"the casinghas anotch ll in a to enablethe liquid underfpressure to leak 'as'the halves 1, 2'areiinsufiiciently pressed {against "each other and the pressure of the V flange 4 onthe plastic jointrring 10 is lower- "than thefpres sure vrequired ,for securing a per "feet filtration; Such pressure is obtainedby means of a;yoke 16 adapted to receive the halves nab'etween its arinsli', l8'havi1'ig i hooked ends- 19, andcompress said halves "by means of a set screw-21' bearing upon the base 7O 16 of the yoke and ing'handle 22. p

The hook 19 at. the end of one of the yoke arms 16 has an ear 23 with aneye 24 by means of which said yoke may be attached to the provided-with an operathalf 1 by a bolt 25, whilst at the same time enabling said half 1 to be moved angularly about the bolt 25 if it desiredto disconnect l I the" device.

The operation ofthe device described is as 7 followszf q v a The filterlng member 6 beingarranged 1n the halfl above the rose 7 the half 2 is fitted onto thehalfl and its position on thelatter determined by a. projection or pin 26 engaging v thenotch -11. The case A being 'thus'completely closed is inserted between the arms 17, 18 of the yoke 16 bycausing same to move.

half 2 belowthe" set 3 screw- 21 which is then operated to compress the c sm A a ainst the hooked ends 19 ofLthe" yoke 16,- whereupon the casing A-willbe screwed by itsexte'nsion onethe end or the cock discharging liquid under pressure/ If the action of the setescrew 2 1 is insufiicient, an indicating leakagewill be produced at18 e and the set-screwshould be tightened further. I

,Ifthe action of the'set screw issuflicient, the

liquid entering through'3 will be distributed about the bolt 25," bringing the centre of the through the perforations lain-the ring 9? upon the surface of the filtering member 6, through which it will be filtered to be collected in the chamber 8*, whence it may be discharged through the tubular extension 9.

It'Will be obvious that the arrangements shown have been described by Way of example only and that many changes may be made therein ithout departing from the spiritof my invention. i I

Having now fully described my said inven-' tion, what I claim and desire to secure by Letters Patent, is

, 1. In a filter for liquidsunder:pressure,the

combination of a filtering device comprising a caslng made or two halves, a yoke and a setscrewon said yoke adapted to secure a filtering member between said halves, means whereby a leak 18 rendered visible if the pressure of said set-screw s insufficient ior ensuring the perfect filtration of the Wholc quantity of liquid flowing through the filter. v a a 2. In a filter forliquids under pressure, a v y filtering device con' prising a casing made of two halves, a filtering member and a joint ring between said two halves, a notch in the edge of one of said halves, apin 0n the edge of the other hali and engaging said notch, a yoke and a set-screw on said yoke adaptedto secure said filtering memberand ring between said halves, and a small slot in said notch throughwhich a leak is readily Visible when 7- the pressure of said set-screw is insufficient "for ensuring the complete filtration of the whole quantity of liquid flowing through the filter.

GREGORI JAVITCH. 

